MAX665CPA ,8V CMOS Switched-Capacitor Voltage ConverterFeatures
. 0.65V Loss at 100mA Load
. 6.59 Output Impedance
. Pln-Compatlble High-Current ICL766 ..
MAX665CPA+ ,8V CMOS Switched-Capacitor Voltage ConverterFeatures
. 0.65V Loss at 100mA Load
. 6.59 Output Impedance
. Pln-Compatlble High-Current ICL766 ..
MAX665CWE ,8V CMOS Switched-Capacitor Voltage Converterapplications.
The MAX665 can also double the output voltage of an
input power supply or battery, ..
MAX665EPA ,8V CMOS Switched-Capacitor Voltage ConverterGeneral Description
The MAX665 charge-pump voltage inverter converts a
+1.5V to +8V input to a ..
MAX665MJA ,8V CMOS Switched-Capacitor Voltage ConverterFeatures
. 0.65V Loss at 100mA Load
. 6.59 Output Impedance
. Pln-Compatlble High-Current ICL766 ..
MAX6660AEE ,Remote-Junction Temperature-Controlled Fan-Speed Regulator with SMBus InterfaceELECTRICAL CHARACTERISTICS(V = +3V to +5.5V, V = +12V, T = -40°C to +125°C, unless otherwise specif ..
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MB3771. ,Power Supply Monitor
MAX665CPA-MAX665CWE-MAX665EPA-MAX665MJA
8V CMOS Switched-Capacitor Voltage Converter
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General Description
The MAX665 charge-pump voltage inverter converts a
+1.5V to +8V input to a corresponding -1.5V to -8V
output. Using only two Iow-cost capacitors to produce
100mA, the MAX665 replaces switching regulators, elim-
inating inductors and their associated cost, size, and
EMI. Greater than 90% efficiency over most of its load-
current range combined with a 200PA typical operating
current provides ideal performance for both battery-pow-
ered and board-level voltage conversion applications.
The MAX665 can also double the output voltage of an
input power supply or battery, providing +9.35V at
100mA from a +5V input.
A Frequency Control (FC) pin selects either 10kHz or
45kHz operation to optimize capacitor size and quiescent
current. The oscillator frequency can also be adjusted
with an external capacitor or driven with an external clock.
The MAX665 is a pin-compatible high-current upgrade
of the ICL7660. For an 8-pin SO version with a 5.5V
maximum input voltage, refer to the MAX660 data sheet.
The MAX665 is available in both 8-pin DIP and 16-pin
wide SO packages in commercial, extended, and military
temperature ranges.
Applications
Laptop Computers
Medical Instruments
Interface Power Supplies
Handheld Instruments
Op-Amp Power Supplies
Wattage GittIntrarInimi,
Features
t 0.65V Loss at 100mA Load
. 6.59 Output Impedance
. Pln-Compatlble High-Current ICL7660 Upgrade
o Inverts or Doubles Input Supply Voltage
. Selectable thtttilltttttr Frequency: 10kHz/45kHz
O 88% Conversion EfBtMrttty at 100mA (lc to GND)
t 200M Operating Current
. +1.5V to MN Supply
Ordering Information
PART TEMP. RANGE PiN-PACKAGE
MAX665CPA O'C to +70°C 8 Plastic DIP
MAX665CWE 0°C to +70'C 16 Wide SO
MAX665C/D O'C to +70°C Dice'
MAX665EPA -40°C to +85''C 8 Plastic DIP
MAX665EWE -40''C to +85°C 16 Wide SO
MAX665MJA -55'C to +125''C 8 CERDIP
' Dice are tested at +25'C only.
Typical Operating Circuits
1.5V T0 av
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GaAs Power-Amp Bias Supplies 2 ,
CAP+ OSC -
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Pin Gonrrgurationts 15% = (910 MAX665 LI/ 1 wggggg
l T 4 5 T VOLTAGE
CAP- OUT OUTPUT
TOPVIEW $1qu
VOLTAGE INVERTER -
FO E E " ''glifio
CAN E "If'gf' El (JSO FO " VOLTAGE
GND E E LII Cl 2 + 02 OUTPUT
15thLFC+- CAN OSC .- 150 F
CAP- E E our _ 3 MAXIM s ll
+VIN GND MAX665 LV
2.5V T0 av 4 5
DIP CAP- out
POSITIVEVOLTAGEDOUBLER =
Wide so oft Iastpage PIN NUMBERS REFER TO DIP PACKAGE.
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MAX665
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ABSOLUTE MAXIMUM RATINGS
Supply Voltage (V+ to GND, or GND to OUT) ......... +8.5V
LV Input Voltage .............. (OUT - 0.3V) to (V+ + 0.3V)
FC and OSC Input Voltages .......... The Least Negative of
(OUT - 0.3V) or (V+ - 6V) to (V+ + 0.3V)
OUT and V+ Continuous Output Current ............. 120mA
Output Short-Circuit Duration to GND (Nate 1) ......... 1 sec
Continuous Power Dissipation (TA = +70''C)
8-Pin Plastic DIP (derate 9.09mW/''C above +70''C) . 727mw
16-Pin Wide SO (derate 9.52rNN/" C above +70°C) . . 762mW
Operating Temperature Ranges:
MAX665C -- ........................... DC to +70'C
MAX665E - - .......................... Mot to +85'C
MAX665MJA ......................... -55'C to +125'C
Storage Temperature Range .............. -65''C to +160'C
Lead Temperature (soldering. 10 sec) .............. +300''C
8-Pin CERDIP (derate 8.00mW/‘C above +70°C) . . . . 640mW
Note 1: OUT may be shorted to GND for 1 sec without damage, but shorting OUT to " may damage the device.
Stresses be and those listed under 'Absolute Maximum Ratings'may cause permanent damage to the device. These are stress ratings only, and functional
operation t2 the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
(V+ = 5V, C1, C2 = 150PF, test circuit of Figure I, FC = open, TA = TMIN to TMAX, unless otherwise noted.) (Note 2)
PARAMETER CONDITIONS MIN TYP MAX UNITS
Inverter, LV = open 3 8
Operating Supply Voltage RL = 1m Inverter, LV = GND 1.5 8 V
Doubler, LV = OUT 2.5 8
Supply Current No load FC = open 0.2 OS mA
FC = V+ 1 3
TA E +85'C, OUT more negative than -4V 100
Output Current . . mA
TA > +85 C, OUT more negative than -3.8V 100
. TA s +85'C 6.5 10
Output Resistance (Note 3) IL = 100mA . a
TA > +85 C 12
Oscillator Frequency FC = open 10 kHz
FC = V+ 45
OSC Input Current FC = open *1 .1 ILA
FC = V+ A5
RL = 1142 connected between V+ and OUT 96 98
Power Efficiency RL = 5009 connected between OUT and GND 92 96 %
IL = 100mA to GND 88
Voltage Conversion Efficiency No load 99 99.96 %
Note 2: In the test circuit, capacitors C1 and C2 are 150p.F, 0.2.0 maximum ESR, aluminum electrolytes (Maxim part # MAXCOO1).
Capacitors with higher ESR may reduce output voltage and efficiency.
Note 3: Specified output resistance is a combination of internal switch resistance and capacitor ESR. See Capacitor Selection section.
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